"Under the drills’ scenario, the notional enemy planned to deliver a massive missile and bomb strike on infrastructural facilities. The alert teams detected the enemy aircraft at a large distance with the help of Nebo-U air surveillance radars," the press office said in a statement.

The S-400 combat teams started tracking, locked on and notionally destroyed air attack weapons by electronic launches when the targets entered the far-off area of the launchers’ striking range, the press office specified.

The scheduled drills "involved about 20 items of military and special hardware," the press office specified.

Russia’s S-400 Triumf (NATO reporting name: SA-21 Growler) is the latest long-and medium-range surface-to-air missile system that went into service in 2007. It is designed to destroy all modern and future aerospace attack weapons: reconnaissance planes, stealth aircraft, fighters, strategic bombers, cruise and ballistic missiles, unmanned aerial vehicles and hypersonic targets.

The S-400 can engage targets at a distance of up to 400 km, at an altitude of up to 30 km and at a maximum speed of 4.8 km/s under intensive enemy fire and jamming in any weather and geographical conditions.

"Under the drills’ scenario, the notional enemy planned to deliver a massive missile and bomb strike on infrastructural facilities. The alert teams detected the enemy aircraft at a large distance with the help of Nebo-U air surveillance radars," the press office said in a statement.

The S-400 combat teams started tracking, locked on and notionally destroyed air attack weapons by electronic launches when the targets entered the far-off area of the launchers’ striking range, the press office specified.

The scheduled drills "involved about 20 items of military and special hardware," the press office specified.

Russia’s S-400 Triumf (NATO reporting name: SA-21 Growler) is the latest long-and medium-range surface-to-air missile system that went into service in 2007. It is designed to destroy all modern and future aerospace attack weapons: reconnaissance planes, stealth aircraft, fighters, strategic bombers, cruise and ballistic missiles, unmanned aerial vehicles and hypersonic targets.

The S-400 can engage targets at a distance of up to 400 km, at an altitude of up to 30 km and at a maximum speed of 4.8 km/s under intensive enemy fire and jamming in any weather and geographical conditions.